color   db25    rj45    db25
        DCE             func

blue	1       1       shield gnd
orange	2       2       RXD (in)
black	6       3       DTR (out)
red	20      4       DSR (in)
green	--	5
yellow	7       6       signal gnd
brown	3       7       TXD (out)
white	--      8


STS-10x RS-232 Signals 
10 Pin	8 Pin  6 Pin   Signal Name	Direction 
 1        --    --    -- Not used --       -- 
 2         1    --     Frame Ground        -- 
 3         2    1      Received Data     Input 
 4         3    2         DTR		 Output 
 5         4    3      Clear To Send     Input 
 6         5    4         Ring           Input 
 7         6    5        Ground            -- 
 8         7    6         TXD		 Output 
 9         8    --    -- Not used --       -- 
 10        --   --    -- Not used --       --